nesh/lib/plugins/autoload.js

An enhanced, extensible shell for Node.js

// Generated by CoffeeScript 1.11.1

/*
Autoloader Plugin
=================
Loads the list of plugins specified in ~/.nesh_config.js if it exists,
otherwise loads a default set of plugins or a passed-in set of plugins.
This plugin is loaded by default when the `nesh` command is executed
in a terminal.

Config options:

{
    ...
    plugins: ['builtins', 'eval', ...],
    pluginsExclude: ['foo']
    ...
}
 */

(function() {
  var _, fs, nesh, path,
    indexOf = [].indexOf || function(item) { for (var i = 0, l = this.length; i < l; i++) { if (i in this && this[i] === item) return i; } return -1; };

  _ = require('underscore');

  fs = require('fs');

  nesh = require('../nesh');

  path = require('path');

  exports.name = 'autoload';

  exports.description = 'Loads a default list of plugins';

  exports.setup = function(context, next) {
    var already_errored, completed, config, defaultPlugins, defaults, i, len, plugin, results;
    defaults = context.nesh.defaults;
    nesh.log.debug('Loading plugin autoload');
    defaultPlugins = ['builtins', 'eval', 'history', 'version', 'welcome', 'require', 'doc'];
    config = nesh.config.get();
    if (config.plugins != null) {
      defaultPlugins = _(defaultPlugins.concat(config.plugins)).uniq();
    }
    if (config.pluginsExclude != null) {
      defaultPlugins = _(defaultPlugins).reject(function(item) {
        return indexOf.call(config.pluginsExclude, item) >= 0;
      });
    }
    if (defaults.plugins == null) {
      defaults.plugins = defaultPlugins;
    }
    completed = 0;
    already_errored = false;
    results = [];
    for (i = 0, len = defaultPlugins.length; i < len; i++) {
      plugin = defaultPlugins[i];
      results.push((function(plugin) {
        nesh.log.debug("Loading plugin " + plugin);
        return nesh.loadPlugin(plugin, function(err) {
          if (err) {
            if (!already_errored) {
              next("Error loading plugin " + plugin + ": " + err);
            }
            return already_errored = true;
          } else {
            completed += 1;
            if (completed >= defaultPlugins.length) {
              return next();
            }
          }
        });
      })(plugin));
    }
    return results;
  };

}).call(this);

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